Rotary drill



A. VERSTEEG ROTARY DRILL Aug. 16, 1927.

Filed 9st. 21. 1922 2 Sheets-Sheet 1 m W W Aug. 16, 1927.

A. NERSTEEG ROTARY DRILL Filed on 21, 1922 2 Sheets-Sheet 2 PatentedAug. 16, 1927.

UNITED STATES ANTON VERSTEEG, F HOUSTON, TEXAS.

no'rAR-Y DRILL.

Application filed October 21, 1922. Serial No. 596,114.

This invention relates to new and useful improvements in a rotary drill.

One object of the invention is to provide a drill adapted for use indrilling wells, particularly deep wells, and wherein thedrill bit isrotated through the reciprocating movements of an actuating, or drivingmember. I

Another object of the invention is to providea drill which may beoperated through a cable, by means of the ordinary cable tool drillingrig. A further feature of the invention resides in the provision of adrilling device of the character described which may be readily pulledfrom or let down into the bore as a unit, and which is of simpleconstruction and may be cheaply and easily manufactured and which willbe very eifective in use. XVith the above and other objects in View theinvention has particular relation to oer-J tain novel features ofconstruction, operation and arrangement of parts, an example of which isgiven in this specification and illustrated in the accompanyingdrawings,

wherein Figure 1 shows a fragmentary vertical sectional view of thedrill.

Figure 2 shows a fragmentary side elevation. i

Figure 3 shows a transverse sectional view taken on the line 33 ofFigure 2 and,

Figure 4 shows a transverse sectional View taken on the line 14 ofFigure 1.

In the drawings, the numeral 1 designates the drill bit. which may be ofany desired construction and form. This bit is attached to thelower endof the tubing 2 whose lower end is outwardly threaded to receive thecollar 3, andwhose upper end carries a stufiing box 4. Intermediate theends'of said tubing there is formed an annular integral rib 5, andwithin the tubing there is screwed an elongated nut 6 having internalcoarse threads- Fitted through the stufiing box 4 there. is an actuatingrod 7 whose lower end is provided with coarse threads which intermeshwith the threads of the nut 6, The upper end of this rod is preferablysquare in cross section and is fitted loosely through a correspondinglyshaped hole in the nut 8 which is screwed into the barrel 9, and boltedto the rod 7 on opposite sides of the nut 8 are the collars 10, 10. Thebarrel 9 is preferably formed of two sections screwed together, as shownin Figure 1, and the lower end of the lower section has an inwardlyturned annular flange 11 which closely surrounds the tubing 2, andinterposed between this fiange and-the collar 3 there is a coil spring12. The upper section of the barrel 9 is provided with a plurality ofradiating blades as 13 which work through corresponding slots in thebarrel. For convenience in construction this upper section may be cutinto lengthwise seg-' ments which are held together at their upper andlower endsby means of the cap screws 1{1,-14. The inner edges of theblades 13 are fastened to yokes 15. Each yoke has end bearings whichwork on the inwardly extending bolts 16, 16. These bolts are thread---rod 7 is such that as said rod is elevated and lowered it will impartrotary motion to the nut 6 and the tubing 2, and this motion will 7 beimparted to the bit 1. Said tube and bit are of considerable weight sothat as the bit rotates back and forth it will remain on the bottom ofthe bore and will disintegrate the formation. The blades 13 will holdthe barrel against rotation by engaging with the well casing 20, or theother walls of the well bore, but their corners being rounded off theywill permit an up and down reciprocating motion of said barrel; v I

When the barrel is dropped it will strike against the resilient seat 12thus minimizing the shock and preventing the breakage of parts. When itis desired to withdraw the bit from the bore the cable 19 may be pulledupwardly and the flange 11 engages against the collar 5 so that theentire apparatus may be withdrawn from the bore as a unit.

What I claim is:'-

1. A well drilling apparatus including a drill bit, a tubular stem tothe lower end of which the bit is attached, a stuffing box carried bysaid stem, a nut within the stem provided with internal coarse threads,an actuating rod working through said stufling box and threaded throughsaid nut, a reciprocable barrel to which the rod is attached and meansfor reciprocating the barrel in a well bore, and a yieldable cushioninterposed between the barrel and stem.

2. A drilling apparatus including a drill bit, a tubular stem to thelower end of which the'bit'is attached, a nut within the stem providedwith internal coarse threads, an actuating rod threaded through saidnut, a reciprocable barrel formed of lengthwise sections, end capssecuring said sections together, a resilient seat carried by the stemprovided to receive the downward stroke of the barrel and yieldinglymounted radiating blades carried by the barrel and passing, through thewall thereofadapted to engage with the walls of the well bore.

3. A well drilling apparatus including a drill bit, a tubular stem tothe lower end of I .which the bit is attached, a bearing carried by thestem, an actuating rod working through said bearing, said stem and rodcarrying intermeshing coarse threads, a reciprocable barrel to which therod is attached, means for reciprocating the barrel in the well bore andmeans preventing the independent rotation of said rod relative to saidbarrel.

4. A well drilling apparatus including a drill bit, a tubular stem tothe lower end of which the bit is attached, a bearing carried by saidstem, an actuating rod working through said bearing within said stem,said rod and stem being provided with coarse intermeshing threadsfareciprocable barrel to which the rod is attached, means forreciprocating the barrel in the well bore, means for preventing theindependent rotation of said rod relative to the barrel and means foranchoring the barrel against rotation relative the walls of said bore.

In testimony whereof I have signed my name to this specification.

' ANTON VERSTEEG.

